Addition and Subtraction within 20

Front

? + 2 = 10

Back

8

Front

4 + 10 = ?

Back

14

Front

8 + ? = 10

Back

2

Front

1 + ? = 9

Back

8

Front

18 - ? = 7

Back

11

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

What is the sum of 5 and 3?

Back

8

Front

What is 10 - 4?

Back

6

Front

If you have 7 apples and you add 2 more, how many apples do you have?

Back

9 apples